Minco II Energy Storage
Battery storage power plant · Grady County, Oklahoma
Nameplate capacity
65 MW
Rank in Oklahoma
#112
of 147 plants
In service since
2025
May 2025
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- Minco II Energy Storage LLC
- County
- Grady County
- Generating units
- 1
- Share of state capacity
- 0.18%
- Rank among battery storage plants in Oklahoma
- #3 of 5
- EIA plant code
- 68802
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MINS2 | Batteries | 65 MW | 65 MW | 2025 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Oklahoma
| International Paper Valliant OK | Other | 68 MW |
| Breckinridge Energy Storage | Battery storage | 65 MW |
| NextEra-Blackwell Wind, LLC | Wind | 60 MW |
| Stillwater Energy Center | Natural gas | 56 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 65 MW solar plant and a 65 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Oklahoma power plants · What Oklahoma actually generates